JP4940555B2 - projector - Google Patents

Description

  The present invention relates to a projector for projecting, for example, a television image on a screen.

2. Description of the Related Art Conventionally, there is a projector technique described in Patent Document 1 or the like, and an example thereof will be described with reference to FIGS. 9 to 12. The optical engine 2 and the gap A are sandwiched between the front part of the casing 1. A pair of front and rear frames 3a, 3b facing each other and a gate-shaped support frame 3 made up of a top plate frame 3c installed between the both frames 3a, 3b are arranged, facing the support frame 3 of the casing 1 The lamp box 6 is disposed in the gap A of the support frame 3 through the outlet 5 with the opening / closing lid 4 opened on the side, and the lamp box 6 is connected to the front frame 3b and the top frame 3c of the support frame 3. The front end connector 8A of the lamp cord 6a extending from the lamp box 6 and the front end connector 8B of the power cord 9a extending from the power board 9 at the rear portion of the casing 1 are connected to each other. Have . In FIG. 10, 10 is the lamp of the lamp box 6,
Reference numeral 11 denotes a reflector.

As shown in FIG. 10, the fans 12 and 13 are fixed to the rear frame 3 a so as to face the optical engine 2 and the lamp box 6, an exhaust port 14 is formed on the front surface of the casing 1, and the casing 1 An intake port 15 is formed from the side surface to the rear surface. In addition, 16 is a radiation fin projecting from the rear end surface of the optical engine 2, and 17 is a controller board.

In the above configuration, a light beam is projected from the lamp box 6 onto the optical engine 2, and an image is projected onto the screen 18 by the projection lens 2 a of the optical engine 2. The optical engine 2 and the lamp box 6 are cooled by sucking air and exhausting the air from the exhaust port 14.

The procedure for attaching the lamp box 6 will be described. As shown by the phantom line in FIG. 10, the lid 4 is removed, the lamp box 6 is brought to the side of the outlet 5, and then the lamp box 6 is removed from the outlet 5. The lamp box 6 is inserted into the gap A of the support frame 3 and fixed to the support frame 3 with screws 7, and then a finger is inserted into the narrow casing 1 from the outlet 5 to connect the tip connector of the lamp cord 6a. 8A is connected to the tip connector 8B of the power cord 9a, and finally the opening / closing lid 4 is attached to the outlet 5. When the lamp 10 is to be replaced, the procedure may be reversed from the above installation procedure.
JP 2002-333668 A

In the conventional configuration, the connectors 8A and 8B are connected along the front-rear direction X, and the lamp box 6 is attached and detached along the left-right direction Y orthogonal to the front-rear direction X. Since the connection direction of 8A and 8B and the attachment / detachment direction of the lamp box 6 are different,
When exchanging the lamp 10, separately from the attaching / detaching operation of the opening / closing lid 4 and the lamp box 6,
It is necessary to perform the operation of connecting and disconnecting the connectors 8A and 8B, which is troublesome and time consuming, and uses two screws 7 to fix the lamp box 6. The number of parts increases by 7, and it takes time and effort to screw and unscrew the screw 7, which is cumbersome and expensive to manufacture.

An object of the present invention is to provide a projector capable of easily attaching and detaching a lamp box with an inexpensive structure in view of the above-described conventional drawbacks.

To achieve the above object, an invention according to claim 1, the optical engine in the front of the casing and support frame are arranged, the lamp cord tip connector extending from the lamp box placed in the gap portion of the support frame Is connected to the front end connector of the power cord, and in the projector in which light is projected from the lamp box onto the optical engine and the image is projected by the projection lens of the optical engine, an outlet is opened on the bottom surface of the casing. And an opening / closing lid inserted into the outlet and locked by a locking mechanism is provided, a lamp box is fixed on the opening / closing lid, a tip connector of the power cord is fixed to a support frame, and The end connector of the lamp cord is fixed to the lamp box, and the opening / closing lid is lifted to remove the lamp box from the outlet. Then, the lamp box is placed at a predetermined position in the casing by sliding the opening / closing lid backward and locking it to the outlet via the locking mechanism. It is characterized in that it is connected to the end connector of the power cord.

According to a second aspect of the present invention, in the first aspect of the present invention, the engagement mechanism is provided in the casing so as to protrude integrally with one end of the opening / closing lid and to face the rear end of the outlet. It consists of an engaging piece that can be engaged and disengaged with the frame, and a projecting piece that is integrally projected on both side surfaces of the other end of the opening / closing lid and can be engaged and disengaged with both recessed portions of the T-shaped groove formed on the lower edge of the front surface of the casing After lifting the opening / closing lid and inserting the lamp box into the casing from the outlet, the opening / closing lid is slid rearward to engage the engagement piece with the engagement frame, and both convex pieces are T-shaped. The opening / closing lid is locked to the outlet by engaging with both concave portions of the groove.

According to a third aspect of the present invention, in the first aspect of the present invention, the engagement mechanism is provided in the casing so as to protrude integrally with one end of the opening / closing lid and to face the inner end of the outlet. An engaging piece that can be engaged with and disengaged from the frame, and a closing plate that closes a gap between the opening and closing lid fitted into the outlet and the front end of the outlet is formed to be detachable from the outlet. After lifting the opening / closing lid and inserting the lamp box into the casing from the outlet, by sliding the opening / closing lid backward,
The engaging piece is engaged with the engaging frame, and the gap between the opening / closing lid fitted into the outlet and the front end of the outlet is closed by a closing plate.

The invention according to claim 1 corresponds to the basic form. According to this, since the connecting direction of the connector and the attaching / detaching direction of the lamp box coincide with each other, the lamp is replaced when the lamp is replaced. By simply attaching and detaching the opening / closing lid with box, the connector can be connected and disconnected at the same time, and the replacement operation can be performed quickly and easily.

According to the second aspect of the present invention, the engaging piece integrally projecting at one end of the opening / closing lid is engaged with the engaging frame provided in the casing, and integrally projectingly provided on both side surfaces of the other end of the opening / closing lid. The lamp box can be locked at a predetermined position in the casing simply by engaging the two convex pieces with both concave portions of the T-shaped groove formed at the lower end edge of the front surface of the casing. Since the multiple screws that were used are unnecessary, the number of parts can be reduced by the amount that is no longer needed,
There is no need to screw and unscrew the screw, and the production cost can be reduced.

According to the third aspect of the present invention, the opening / closing lid can be locked to the outlet without the screw as in the case of the second aspect , and the outlet is formed on the bottom surface of the casing. Since it is not visible from the inside, the appearance of the exterior can be maintained well, and the gap between the opening / closing lid fitted in the outlet and the front end of the outlet is closed with a closing plate, so that It is possible to prevent dust and the like from entering the wall.

1 to 6 show the projector according to the first embodiment of the present invention, in which the front frame 3b (see FIG. 12) of the support frame 3 is deleted, and the outlet 5 is formed on the bottom surface of the casing 1. FIG. Is opened, and a T-shaped groove 20 that communicates with the outlet 5 is formed at the lower edge of the front surface of the casing 1. The opening / closing lid is inserted from the T-shaped groove 20 to the outlet 5 and locked by the locking mechanism 21. 4 is provided, and a lamp box 6 is fixed on the opening / closing lid 4. Other configurations than the above are shown in FIGS.
Since the configuration is almost the same as that shown in FIG. 12, the same reference numerals are given to the same portions, and the description thereof is omitted.

As shown in FIG. 3, the locking mechanism 21 is a pair of left and right L-shaped engagement frames that are integrally provided at one end of the opening / closing lid 4 and that are provided in the casing 1 so as to face the rear end of the outlet 5. 22, and an engaging piece 21 a that can be engaged with and disengaged from the open / close lid 4, and a protruding piece 21 b that is integrally provided on both sides of the other end of the opening / closing lid 4 and that can be engaged with and disengaged from both the recessed portions 20 a of the T-shaped groove 20.

As shown in FIG. 4, holders 23 and 24 facing each other along the front-rear direction X are integrally formed on the rear frame body 3 a of the support frame 3 and the lamp box 6, respectively.
In addition, the tip connector 8B of the power cord 9a is detachably attached, and the tip connector 8A of the lamp cord 6a is detachably attached to the lamp box 6 side holder 24.

The procedure for attaching the lamp box 6 will be described. After the opening / closing lid 4 with the lamp box 6 is brought below the outlet 5 as shown in FIG. 6 (a), the opening / closing is performed as shown in FIG. 6 (b). Lid 4
And the lamp box 6 is inserted into the casing 1 through the outlet 5 and the opening / closing lid 4 is slid rearward to engage the engagement piece 21a with the engagement frame 22 as shown in FIG. Both the protruding pieces 21b are engaged with both the recessed portions 20a of the T-shaped groove 20, and the lamp box 6 is disposed at a predetermined position in the casing 1, and at the same time, the tip connector 8A of the lamp cord 6a is connected to the tip of the power cord 9a. Connect to connector 8B. When the lamp 10 is to be replaced, the procedure may be reversed from the above installation procedure.

According to the above configuration, the connecting direction of the connectors 8A and 8B and the attaching / detaching direction of the lamp box 6 coincide with the front-rear direction X. Therefore, when the lamp 10 is replaced, the opening / closing lid 4 with the lamp box 6 is provided. The connector 8A and 8B can be connected and disconnected at the same time simply by performing the attaching / detaching operation, and the replacement work can be performed quickly and easily.

In addition, an engagement frame 2 provided in the casing 1 with an engagement piece 21 a integrally projecting from one end of the opening / closing lid 4.
2 and engaging both convex portions 21b integrally projecting on both side surfaces of the other end of the opening / closing lid 4 with both concave portions 20a of the T-shaped groove 20 formed on the lower end edge of the front surface of the casing 1, Since the lamp box 6 can be locked at a predetermined position in the casing 1 and the plurality of screws 7 (see FIG. 11) conventionally required for the locking are not required, only the amount that is not required is required. The number of parts can be reduced, and the screwing and unscrewing operations of the screw 7 are not required, so that the manufacturing cost can be reduced.

7 and 8 show a projector according to a second embodiment of the present invention, in which a locking mechanism 21 is integrally projected at one end of the opening / closing lid 4 and is provided at the far end of the outlet 5. It consists of the engaging piece 21a which can be engaged / disengaged with the engaging frame 22 provided in the casing 1 facing. In addition, a closing plate 25 is provided for closing a gap between the opening / closing lid 4 fitted in the outlet 5 and the front end of the outlet 5, and the upper end of both sides of the closing plate 25 is connected to the periphery of the outlet 5. An engaging protrusion 26 that is detachably engaged is integrally formed, a concave step portion 4a is formed at the lower portion of the front end edge of the opening / closing lid 4, and a convex step portion 25a that engages with the concave step portion 4a is a closing plate. 25 is formed at the lower part of the rear end edge. Configurations other than the above are shown in FIGS.
Are substantially the same as those of the first embodiment shown in FIG.

The procedure for attaching the lamp box 6 will be described. As shown in FIG. 8 (a), after the opening / closing lid 4 with the lamp box 6 is brought below the outlet 5, the opening / closing is performed as shown in FIG. 8 (b). Lid 4
Is lifted, the lamp box 6 is inserted into the casing 1 from the outlet 5, and the opening / closing lid 4 is slid rearward, whereby the engaging piece 21a is engaged with the engaging frame 22 as shown in FIG.
The lamp box 6 in a predetermined position in the casing 1, and at the same time,
The tip connector 8A of the lamp cord 6a is connected to the tip connector 8B of the power cord 9a.
Next, the closing plate 25 is inserted into the gap between the opening / closing lid 4 fitted in the outlet 5 and the front end of the outlet 5 to engage the engaging protrusion 26 with the peripheral edge of the outlet 5. The convex step 25 of the closing plate 25
a is engaged with the recessed step portion 4 a of the opening / closing lid 4. When the lamp 10 is to be replaced, the procedure may be reversed from the above installation procedure.

According to the said structure, the effect similar to 1st Embodiment shown in FIGS. 1-6 can be acquired, and since especially the exit 5 is formed in the bottom face of the casing 1 and cannot be seen from a front, it is external appearance The upper appearance can be satisfactorily maintained, and the opening / closing lid 4 fitted in the outlet 5 and the outlet 5
It is possible to prevent dust and the like from entering the casing 1 by closing the gap between the front end of the casing 1 and the front end with the closing plate 25.

1 is a perspective view of a projector according to a first embodiment of the invention. It is the horizontal sectional view. It is a disassembled perspective view of the vicinity of the same outlet. It is a disassembled perspective view of the vicinity of the connector. It is a longitudinal cross-sectional view of the lamp box vicinity. (A) And (b) is a longitudinal cross-sectional view which shows the attachment / detachment procedure of a lamp box. It is a disassembled perspective view of the vicinity of the outlet of the projector according to the second embodiment of the present invention. (A)-(c) is a longitudinal cross-sectional view which shows the attachment / detachment procedure of a lamp box. It is a perspective view which shows a prior art example. It is the horizontal sectional view. It is a longitudinal cross-sectional view of the lamp box vicinity. FIG.

DESCRIPTION OF SYMBOLS 1 Casing 2 Optical engine 3 Support frame 3a, 3b Frame of support frame 3c Top plate frame of support frame 4 Opening / closing lid 5 Outlet 6 Lamp box 6a Lamp cord 7 Screw 8A Lead connector of lamp cord 8B Lead connector of power cord 20 T-groove 20a T-groove recess 21 Locking mechanism 21a Locking mechanism engagement piece 21b Locking mechanism convex piece 22 Engagement frame 25 Closing plate A Gap

Claims (3)

An optical engine and a support frame are arranged at the front part in the casing, and a tip connector of a lamp cord extending from a lamp box arranged in a gap portion of the support frame and a tip connector of a power cord are connected. In a projector in which light is projected onto an optical engine and an image is projected by a projection lens of the optical engine, an outlet is opened on the bottom surface of the casing, inserted into the outlet, and locked by a locking mechanism. An opening / closing lid is provided, a lamp box is fixed on the opening / closing lid, a tip connector of the power cord is fixed to a support frame, and a tip connector of the lamp cord is fixed to the lamp box. After lifting the lid and inserting the lamp box into the casing from the outlet, slide the open / close lid backward. The lamp box is arranged at a predetermined position in the casing by being locked to the outlet via a locking mechanism, and at the same time, the lamp cord tip connector is connected to the power cord tip connector. Projector. The engaging mechanism is integrally protruded at one end of the opening / closing lid, and engages and disengages with an engaging frame provided in the casing so as to face the back end of the outlet, and both sides of the other end of the opening / closing lid And a convex piece that can be engaged with and disengaged from both concave portions of the T-shaped groove formed at the lower end edge of the front surface of the casing, and the lamp cover is lifted to insert the lamp box into the casing. After that, by sliding the opening / closing lid backward, the engaging piece is engaged with the engaging frame, and both convex pieces are engaged with both concave portions of the T-shaped groove, and the opening / closing lid is locked to the outlet. The projector according to claim 1 , wherein the projector is configured as described above. The locking mechanism is an engaging piece that is integrally protruded from one end of the opening / closing lid and that can be engaged with and disengaged from an engaging frame provided in the casing so as to face the back end of the outlet, and is fitted into the outlet. A closing plate that closes the gap between the opening / closing lid and the front end of the outlet is formed so as to be detachable from the outlet, and after lifting the opening / closing lid, the lamp box is inserted into the casing from the outlet. By sliding the opening / closing lid backward, the engagement piece is engaged with the engagement frame, and the gap between the opening / closing lid fitted in the outlet and the front end of the outlet is closed with a closing plate. The projector according to claim 1 , wherein the projector is configured as described above.

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